Who called from 2543091015

Get this call several times a day. No one responds when I answer.

Same as the above. Get's this call a lot but nobody is ever there. Just an occasional click.

Receiving around 5 calls a day from this number and no one responds when we answer.    Could this be attempted toll fraud?

We've had over 350 calls from this number to our business 800 number in the last month.

This was a call from someone who pretended to be hearing impaired. The caller identified it as a prank call at the end of the call.